Continuous powder material fluidization dynamic flow metering device

Abstract

The utility model provides a continuous type powder material fluidization dynamic flow metering device which comprises a powder rheometer body, a continuous feeding assembly is arranged on the powder rheometer body, a supporting rod is connected with the powder rheometer body through a connecting piece, a drawing piece is arranged on the periphery of a fixing block, and the drawing piece is connected with the powder rheometer body through a connecting piece. According to the dynamic flow metering device, the storage cylinder is pulled to move transversely, after the storage cylinder drives the bottom cover to be separated from the annular plate, the bottom cover is automatically opened under the action of the weight of a powder sample, and then the powder sample enters the funnel; the traditional operation steps of repeatedly collecting and repeatedly metering the measured powder sample are changed, and the four storage cylinders are used for continuously feeding, so that the powder sample is prevented from being attached to a collecting container of the powder rheometer body, the total weight is prevented from being reduced, and the metering precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic flow metering devices, in particular to a continuous type fluidized dynamic flow metering device for powder materials. Background Art

[0002] A powder rheometer is an instrument used to measure the flow characteristics of powder materials under specific conditions. Its main function is to characterize the rheological properties of powders, that is, the fluidity and behavioral characteristics of powders. The working principle of the powder rheometer is based on the shear thinning and shear thickening phenomena. Shear stress is generated by applying shear force, thereby studying the interaction between powder particles.

[0003] Among them, when using a powder rheometer to measure the dynamic flow of powder materials, it is necessary to take a 50-gram powder sample and put it into the funnel of the powder rheometer, and use a timer to measure the speed at which the powder sample is discharged from the funnel. This process is repeated at least three times and the average value is taken to calculate the flow rate of the powder material. After the 50-gram powder sample is repeatedly collected and then put back into the process, part of the powder sample will adhere to the collection plate of the powder rheometer, resulting in less than 50 grams of powder sample, which in turn affects the measurement accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a continuous type powder material fluidization dynamic flow metering device, which solves the problem that after the powder sample goes through the process of repeated collection and re-addition, part of the powder sample will adhere to the collection plate of the powder rheometer, resulting in insufficient powder sample.

[0005] The utility model provides a continuous powder material fluidization dynamic flow metering device, comprising a powder rheometer body, a funnel configured in the powder rheometer body, and a continuous feeding component provided on the powder rheometer body, the continuous feeding component being used to continuously feed the powder material into the funnel to shorten the metering time;

[0006] The continuous feeding assembly includes a support rod, a connecting piece, a storage cylinder and an annular plate;

[0007] The support rod is connected to the powder rheometer body through the connecting piece, the top end of the support rod is rotatably connected to a fixed block, a pull-out piece is provided on the outer periphery of the fixed block, the storage cylinder is connected to the fixed block through the pull-out piece, the bottom end of the storage cylinder is hinged with a bottom cover, the center hole of the annular plate is connected to the support rod, and the bottom ends of the annular plate and the bottom cover are abutted against each other.

[0008] Preferably, the drawer comprises a connecting rod, a U-shaped frame, a baffle and an elastic member;

[0009] The connecting rods are evenly distributed along the fixed block, the U-shaped frame is inserted into the outer circumference of the connecting rod, the open end of the U-shaped frame is fixedly connected to the storage cylinder, the baffle is fixedly connected to an end of the connecting rod away from the fixed block, the elastic member is sleeved on the outer circumference of the connecting rod, and the elastic member is located between the baffle and the U-shaped frame.

[0010] Preferably, a measuring component is installed on the powder rheometer body, and the measuring component is used to measure the taper and angle of repose of the powder material;

[0011] The measuring assembly includes a collecting cylinder, a supporting member, a material storage plate, an adjusting frame and a protractor;

[0012] The collecting cylinder is located directly below the funnel, the material storage plate is connected to the collecting cylinder through the support member, the material storage plate is used to stack the fallen powder material, the adjustment frame is installed on the outer circumference of the collecting cylinder, and the protractor is hinged to the adjustment frame through a pin shaft.

[0013] Preferably, the adjustment rack includes a storage rack, a vertical rod, a slot plate and a horizontal plate;

[0014] The storage rack is fixedly connected to the collecting tube, the vertical rod is inserted into the limiting hole of the storage rack, a first bolt is provided in the storage rack, the storage rack is connected to the vertical rod via the first bolt, the slot plate is fixedly connected to the top end of the vertical rod, the horizontal plate is located in the sliding groove of the slot plate, and one end of the horizontal plate away from the slot plate is hinged to the protractor.

[0015] Preferably, a second bolt is disposed in the transverse plate, and the transverse plate is connected to the slot plate via the second bolt.

[0016] Preferably, the support member comprises a cylinder, a slide rod and a push pin;

[0017] The bottom end of the cylinder is fixedly connected to the collecting cylinder, the sliding rod is inserted into the through hole of the cylinder, the top end of the sliding rod is fixedly connected to the material storage plate, and the sliding rod is connected to the cylinder through the top pin.

[0018] Preferably, the slide bar is evenly distributed with card slots, and the card slots are adapted to the ejector pins.

[0019] Preferably, the connecting member includes a strip plate and a positioning pin;

[0020] The strip plate is fixedly connected to the support rod, and the strip plate is connected to the powder rheometer body via the positioning pin.

[0021] Preferably, the connecting rod is processed into a prismatic shape, and a prismatic hole adapted to the connecting rod is processed in the U-shaped frame.

[0022] Preferably, the elastic member is a compression spring.

[0023] The utility model provides a continuous powder material fluidization dynamic flow metering device:

[0024] By using the supporting rod, connecting piece, fixing block, pulling piece, storage cylinder, bottom cover, annular plate and the like in coordination, the storage cylinder is pulled to move horizontally. After the storage cylinder drives the bottom cover and the annular plate to separate, the bottom cover automatically opens under the action of the weight of the powder sample, and the powder sample enters the funnel. After four groups of powder samples are measured, the average value is taken to complete the calculation of the powder sample flow rate. The traditional operation steps of repeatedly collecting and repeatedly measuring the powder samples to be measured are changed. Four storage cylinders are used for continuous feeding to prevent the powder sample from adhering to the collection container of the powder rheometer body, causing a decrease in the total weight, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the support rod, connecting piece, fixing block and storage cylinder in the utility model;

[0028] Figure 3 This is a structural diagram of the connecting rod, U-shaped frame, baffle, and elastic member in the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the storage rack, vertical rods, slot plates, horizontal plates, and protractor in the utility model;

[0030] Figure 5 This is a structural diagram of the cylinder, slide rod, ejector pin and storage plate in the utility model.

[0031] Description of reference numerals:

[0032] 1- Powder rheometer body, 11- Funnel, 2- Continuous feeding assembly, 21- Support rod, 22- Connecting piece, 221- Strip plate, 222- Positioning pin, 23- Fixed block, 24- Pulling piece, 241- Connecting rod, 242- U-shaped frame, 243- Baffle, 244- Elastic piece, 25- Storage cylinder, 251- Bottom cover, 26- Ring plate, 3- Measuring assembly, 31- Collecting cylinder, 32- Support piece, 321- Cylinder, 322- Slide rod, 323- Top pin, 33- Storage plate, 34- Adjustment frame, 341- Storage rack, 341a- First bolt, 342- Vertical rod, 343- Slot plate, 344- Horizontal plate, 344a- Second bolt, 35- Protractor. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center" - "longitudinal" - "transverse" - "length" - "width" - "thickness" - "up" - "down" - "front" - "back" - "left" - "right" - "vertical" - "horizontal" - "top" - "bottom" - "inside" - "outside" - "clockwise" - "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0035] In the description of the present invention, it should be understood that the terms "first"-"second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first"-"second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed"-"connected"-"connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] In this embodiment, if Figure 1 and Figure 2 As shown, a continuous powder material fluidization dynamic flow metering device includes a powder rheometer body 1, a funnel 11 is configured in the powder rheometer body 1, and a continuous feeding component 2 is provided on the powder rheometer body 1. The continuous feeding component 2 is used to continuously feed the powder material into the funnel 11 to shorten the metering time. The continuous feeding component 2 includes a support rod 21, a connecting piece 22, a storage cylinder 25 and an annular plate 26. The support rod 21 is connected to the powder rheometer body 1 through the connecting piece 22. The top end of the support rod 21 is rotatably connected to a fixed block 23. A pull-out piece 24 is provided on the outer periphery of the fixed block 23. The storage cylinder 25 is connected to the fixed block 23 through the pull-out piece 24. The bottom end of the storage cylinder 25 is hinged with a bottom cover 251. The center hole of the annular plate 26 is connected to the support rod 21, and the bottom ends of the annular plate 26 and the bottom cover 251 are abutted against each other.

[0037] Thus, 50 grams of powder sample is placed in each of the four storage cylinders 25, and the storage cylinder 25 is pulled to move horizontally. After the storage cylinder 25 drives the bottom cover 251 and the annular plate 26 to separate, the bottom cover 251 automatically opens under the action of the weight of the powder sample, and then the powder sample enters the funnel 11. The fixed block 23 is rotated at the top of the support rod 21, and the fixed block 23 drives another storage cylinder 25 to rotate to the top of the funnel 11. The storage cylinder 25 is still pulled horizontally, and the powder in the other storage cylinder 25 enters the funnel 11 again. The switch and stopwatch at the bottom of the funnel are turned on at the same time to measure the speed at which the powder sample is discharged from the storage cylinder 25. After the measurement of the four groups of powder samples is completed, the average value is taken to complete the calculation of the powder sample flow rate. The traditional operation steps of repeatedly collecting and repeatedly measuring the powder sample to be measured are changed, and the four storage cylinders 25 are used to continuously feed the material to prevent the powder sample from adhering to the collection container of the powder rheometer body 1, causing the total weight to decrease, thereby improving the measurement accuracy.

[0038] Specifically, the powder rheometer body 1 is used to characterize the fluidity and behavioral characteristics of the powder, the funnel 11 is used to store the powder to be tested, the fixed block 23 is connected to the support rod 21 through a bearing, four pull-out pieces 24 are provided, distributed on the four surfaces of the fixed block 23, the storage cylinder 25 is processed into a cylindrical shape, the bottom cover 251 is hinged to the storage cylinder 25 through a pin shaft, and the annular plate 26 abuts against the bottom of the bottom cover 251 so that the bottom cover 251 closes the storage cylinder 25.

[0039] In some embodiments, as Figure 3As shown, the pull-out member 24 includes a connecting rod 241, a U-shaped frame 242, a baffle 243 and an elastic member 244. The connecting rod 241 is evenly distributed along the fixed block 23, the U-shaped frame 242 is inserted into the outer periphery of the connecting rod 241, the open end of the U-shaped frame 242 is fixedly connected to the storage cylinder 25, the baffle 243 is fixedly connected to the end of the connecting rod 241 away from the fixed block 23, the elastic member 244 is sleeved on the outer periphery of the connecting rod 241, and the elastic member 244 is located between the baffle 243 and the U-shaped frame 242.

[0040] Specifically, four connecting rods 241 are provided, the U-shaped frame 242 is used to connect the storage cylinder 25 , and the baffle 243 is used to constrain the position of the elastic member 244 on the connecting rod 241 .

[0041] In some embodiments, as Figure 4 As shown, a measuring assembly 3 is installed on the powder rheometer body 1. The measuring assembly 3 is used to measure the taper and repose angle of the powder material. The measuring assembly 3 includes a collecting barrel 31, a support 32, a material storage plate 33, an adjustment frame 34 and a protractor 35. The collecting barrel 31 is located directly below the funnel 11. The material storage plate 33 is connected to the collecting barrel 31 through the support 32. The material storage plate 33 is used to stack the fallen powder material. The adjustment frame 34 is installed on the outer periphery of the collecting barrel 31. The protractor 35 is hinged to the adjustment frame 34 through a pin.

[0042] Specifically, the collecting cylinder 31 is used to collect the powder material flowing out of the funnel 11, the support 32 is used to adjust the use height of the storage plate 33, and the adjustment frame 34 is used to change the use position of the protractor 35. The falling powder sample can be accumulated on the storage plate 33 to form a cone shape. By offsetting the protractor 35 and making it parallel to the conical powder sample, the taper of the powder material is measured to calculate the angle of repose.

[0043] In some embodiments, as Figure 4 As shown, the adjustment frame 34 includes a storage rack 341, a vertical rod 342, a slot plate 343 and a horizontal plate 344. The storage rack 341 is fixedly connected to the collecting tube 31, the vertical rod 342 is inserted into the limiting hole of the storage rack 341, and a first bolt 341a is configured in the storage rack 341. The storage rack 341 is connected to the vertical rod 342 through the first bolt 341a. The slot plate 343 is fixedly connected to the top of the vertical rod 342, and the horizontal plate 344 is located in the sliding groove of the slot plate 343. The end of the horizontal plate 344 away from the slot plate 343 is hinged to the protractor 35.

[0044] Specifically, a through hole that is compatible with the vertical rod 342 is processed in the storage rack 341, and two first bolts 341a are provided. The vertical rod 342 drives the slot plate 343 to move to change the operating height of the protractor 35. The protractor 35 rotates on the horizontal plate 344 through the pin shaft. The sliding groove in the slot plate 343 is compatible with the horizontal plate 344. The horizontal plate 344 is moved horizontally in the slot plate 343 to drive the protractor 35 to move close to the powder sample cone at the top of the storage plate 33.

[0045] In some embodiments, as Figure 4 As shown, the transverse plate 344 is provided with a second bolt 344 a , and the transverse plate 344 is connected to the slot plate 343 via the second bolt 344 a .

[0046] Specifically, a plurality of threaded holes are transversely arranged in the groove of the slot plate 343 , and the threaded holes are adapted to the second bolts 344 a . The position of the horizontal plate 344 in the slot plate 343 is adjusted and fixed using the second bolts 344 a .

[0047] In some embodiments, as Figure 5 As shown, the support member 32 includes a cylinder 321, a slide rod 322 and a push pin 323. The bottom end of the cylinder 321 is fixedly connected to the collecting cylinder 31, the slide rod 322 is inserted into the through hole of the cylinder 321, the top end of the slide rod 322 is fixedly connected to the material storage plate 33, and the slide rod 322 is connected to the cylinder 321 through the push pin 323.

[0048] The cavity of the cylinder 321 is adapted to the slide rod 322 , a slot is machined on the outer wall of the slide rod 322 , and a thread is provided on the outer wall of the ejector pin 323 . The position of the slide rod 322 in the cylinder 321 can be changed to adjust the height of the storage plate 33 .

[0049] In some embodiments, as Figure 5 As shown, the slide bar 322 is evenly distributed with slots, which are matched with the ejector pins 323 .

[0050] Specifically, the slots are evenly distributed along the vertical direction of the slide bar 322 , and the ejector pins 323 are inserted into the corresponding slots to adjust the height of the slide bar 322 in the cylinder 321 .

[0051] In some embodiments, as Figure 2 As shown, the connecting member 22 includes a strip plate 221 and a positioning pin 222 . The strip plate 221 is fixedly connected to the support rod 21 , and the strip plate 221 is connected to the powder rheometer body 1 via the positioning pin 222 .

[0052] Specifically, the strip plate 221 is located at the bottom end of the support rod 21, and the outer wall of the positioning pin 222 is processed with threads. The positioning pin 222 connects the strip plate 221 and the powder rheometer body 1 to fix the use position of the support rod 21. In addition, other connection structures can also be used to fix the support rod 21 and the powder rheometer body 1.

[0053] In some embodiments, as Figure 3 As shown, the connecting rod 241 is processed into a prismatic shape, and a prismatic hole adapted to the connecting rod 241 is processed in the U-shaped frame 242 .

[0054] The connecting rod 241 is designed in a prismatic shape to prevent the U-shaped frame 242 from rotating on the outer wall of the connecting rod 241 and to restrict the U-shaped frame 242 from moving laterally on the outer periphery of the connecting rod 241 .

[0055] In some embodiments, as Figure 3 As shown, the elastic member 244 is a compression spring.

[0056] The elastic member 244 is designed as a compression spring, which facilitates driving the U-shaped frame 242 to reset on the connecting rod 241.

[0057] The working principle of this application is described below with a preferred embodiment:

[0058] When using the powder rheometer body 1 to measure the powder flow rate, the powder rheometer body 1 is used in conjunction with an external stopwatch. 50 grams of powder sample are placed in each of the four storage cylinders 25. The storage cylinder 25 is pulled to drive the U-shaped frame 242 to move laterally along the outer wall of the connecting rod 241. The U-shaped frame 242 compresses the elastic member 244 on the outer wall of the connecting rod 241. At the same time, the storage cylinder 25 drives the bottom cover 251 and the annular plate 26 to separate. The bottom cover 251 automatically opens under the action of the weight of the powder sample, and then the powder sample enters the funnel 11. The switch and stopwatch at the bottom of the funnel are turned on at the same time to measure the speed at which the powder sample is discharged from the storage cylinder 25. This completes the measurement of a group of powder samples and rotates at the top of the support rod 21. Turn the fixed block 23, and the fixed block 23 drives another storage cylinder 25 to rotate to the top of the funnel 11. Repeat the above steps to measure the flow rate of the powder sample twice. After the measurement of four groups of powder samples is completed, take the average value to complete the calculation of the powder sample flow rate. The powder sample passing through the funnel 11 falls on the upper surface of the storage plate 33 to form a cone. Move the vertical rod 342 vertically in the rack 341, and use the first bolt 341a to fix the position of the vertical rod 342 to change the working height of the protractor 35. Move the horizontal plate 344 horizontally in the slot plate 343 to drive the protractor 35 to approach the powder cone formed on the upper surface of the storage plate 33. By offsetting the protractor 35 to be parallel to the inclined surface of the cone, the taper of the cone can be measured.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous powder material fluidization dynamic flow metering device, comprising a powder rheometer body (1), wherein the powder rheometer body (1) is provided with a funnel (11), characterized in that: The powder rheometer body (1) is provided with a continuous feeding component (2), and the continuous feeding component (2) is used to continuously feed the powder material into the funnel (11) to shorten the metering time; The continuous feeding assembly (2) comprises a support rod (21), a connecting piece (22), a storage cylinder (25) and an annular plate (26); The support rod (21) is connected to the powder rheometer body (1) through the connecting piece (22); the top end of the support rod (21) is rotatably connected to a fixed block (23); a pull-out piece (24) is provided on the outer periphery of the fixed block (23); the storage cylinder (25) is connected to the fixed block (23) through the pull-out piece (24); the bottom end of the storage cylinder (25) is hinged with a bottom cover (251); the center hole of the annular plate (26) is connected to the support rod (21); the bottom ends of the annular plate (26) and the bottom cover (251) are abutted against each other.

2. A continuous powder material fluidization dynamic flow metering device according to claim 1, characterized in that: The drawer (24) comprises a connecting rod (241), a U-shaped frame (242), a baffle (243) and an elastic member (244); The connecting rod (241) is evenly distributed along the fixed block (23); the U-shaped frame (242) is inserted into the outer periphery of the connecting rod (241); the open end of the U-shaped frame (242) is fixedly connected to the storage cylinder (25); the baffle (243) is fixedly connected to an end of the connecting rod (241) away from the fixed block (23); the elastic member (244) is sleeved on the outer periphery of the connecting rod (241); and the elastic member (244) is located between the baffle (243) and the U-shaped frame (242).

3. A continuous powder material fluidization dynamic flow metering device according to claim 1, characterized in that: A measuring component (3) is installed on the powder rheometer body (1), and the measuring component (3) is used to measure the taper and the angle of repose of the powder material; The measuring assembly (3) comprises a collecting cylinder (31), a supporting member (32), a material storage plate (33), an adjusting frame (34) and a protractor (35); The collecting cylinder (31) is located directly below the funnel (11); the material storage plate (33) is connected to the collecting cylinder (31) via the support member (32); the material storage plate (33) is used to stack the fallen powder materials; the adjusting frame (34) is installed on the outer periphery of the collecting cylinder (31); and the protractor (35) is hinged to the adjusting frame (34) via a pin.

4. A continuous powder material fluidization dynamic flow metering device according to claim 3, characterized in that: The adjustment frame (34) includes a storage rack (341), a vertical rod (342), a slot plate (343) and a horizontal plate (344); The storage rack (341) and the collecting tube (31) are fixedly connected, the vertical rod (342) is inserted into the limiting hole of the storage rack (341), a first bolt (341a) is arranged in the storage rack (341), the storage rack (341) is connected to the vertical rod (342) through the first bolt (341a), the slot plate (343) is fixedly connected to the top end of the vertical rod (342), the horizontal plate (344) is located in the sliding groove of the slot plate (343), and the end of the horizontal plate (344) away from the slot plate (343) is hinged to the protractor (35).

5. A continuous powder material fluidization dynamic flow metering device according to claim 4, characterized in that: The transverse plate (344) is provided with a second bolt (344a), and the transverse plate (344) is connected to the groove plate (343) via the second bolt (344a).

6. A continuous powder material fluidization dynamic flow metering device according to claim 3, characterized in that: The support member (32) includes a cylinder (321), a slide rod (322) and a push pin (323); The bottom end of the cylinder (321) is fixedly connected to the collecting cylinder (31), the sliding rod (322) is inserted into the through hole of the cylinder (321), the top end of the sliding rod (322) is fixedly connected to the material storage plate (33), and the sliding rod (322) is connected to the cylinder (321) through the top pin (323).

7. A continuous powder material fluidization dynamic flow metering device according to claim 6, characterized in that: The slide bar (322) is evenly distributed with card slots, which are matched with the ejector pin (323).

8. The continuous powder material fluidization dynamic flow metering device according to claim 1, characterized in that: The connecting member (22) includes a strip plate (221) and a positioning pin (222); The strip plate (221) and the support rod (21) are fixedly connected, and the strip plate (221) is connected to the powder rheometer body (1) via the positioning pin (222).

9. A continuous powder material fluidization dynamic flow metering device according to claim 2, characterized in that: The connecting rod (241) is processed into a prismatic shape, and a prismatic hole adapted to the connecting rod (241) is processed in the U-shaped frame (242).

10. A continuous powder material fluidization dynamic flow metering device according to claim 2, characterized in that: The elastic member (244) is a compression spring.

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